diff --git a/callback/src/main/java/com/iluwatar/App.java b/callback/src/main/java/com/iluwatar/App.java
index 6a36d66d7..2d79d8edf 100644
--- a/callback/src/main/java/com/iluwatar/App.java
+++ b/callback/src/main/java/com/iluwatar/App.java
@@ -1,7 +1,7 @@
 package com.iluwatar;
 
 /**
- * Callback pattern is more native for dynamic languages where function are first-class citizen.
+ * Callback pattern is more native for functional languages where function is treated as first-class citizen.
  * Prior to Java8 can be simulated using simple (alike command) interfaces.
  */
 public class App {